tìm nghiệm cuả đa thức

a) \(2x^2+2x\)

b)\(\left(x^2-7\right)\left(x^3+x\right)\)

c) \(x^2-7x+12\)

a) cho f(x) = \(mx^2-3x+2\) Tìm m biết x=-1 là nghiệm của f(x)

b) tìm nghiệm của đa thức: g(x)= 5x+3+3(3x+7)-3

c) CMR: đa thức: \(x^2+2x+2\) không có nghiệm với mọi x

Cho đa thức A(x)= \(4x^3+2x^4-x^2-x^3+2^2-x^4+1-3^3\)

a) sắp xếp đa thức theo lũy thừa giảm dần

b) Tính A(-1). A(1)

c) Chứng tỏ đa thức ko có nghiệm

\(A=\frac{19}{5}xy^2\left(x^3y\right).\left(-5x^6y^7\right)\)

a) thu gọn đon thức

b) tìm hệ số và bậc

c) tính giá trị A tại x=2, y=-1

59. Someone will translate this letter into Vietnamese.

This letter………………………………………………………...........................................

60. Traveling around the city in a day is impossible.

It………………………………………………………...........................................................

61. Is it all right if I take a photograph ?

Would you mind………………………………………………………..................................?

62. “Shut the door but don’t lock it”, she said to us

She asked……………………………………………………….........................................

63. Air travel is faster than any other kinds of transport.

Air travel is the………………………………………………………....................................

64. We haven’t seen each other for over two years.

The last time………………………………………………………....................................

65. I would like you to help me move this table.

Do you mind………………………………………………………..................................?

66. The water was so cold that the children could not swim in it.

The water was not……………………………………………………….................................

67. Mai keeps leaving her pen at home.

Mia is………………………………………………………................................................

68. She is not only a teacher, she is also a singer.

Not only………………………………………………………............................................

69. He always borrows my pen.

He is………………………………………………………..................................................

70. Christmas cards should be sent a week before Christmas Day.

You………………………………………………………....................................................

71. “ We are waiting for the school bus”, said the children.

The children said………………………………………………………...............................

72. Nobody has used this machine for years.

This machine…………………………………………………………………………………

73. Roses can’t possibly grow in such poor ground.

It is impossible………………………………………………………....................................

74. They use recycled plastic to make toys and utensils.

Recycled……………………………………………………….............................................

75. The last time I played tennis was in 1990.

I haven’t………………………………………………………...............................................

77. Please don’t smoke in the kitchen.

Would you mind………………………………………………………..................................?

78. It is two months since I saw her.

I haven’t……………………………………………………….............................................

79. Tax free goods can be bought before you get on the plane.

You………………………………………………………..................................................

80. The repairman is going to reoair my car next week.

We era going to have………………………………………………………...........................

81. It was such an interesting film that we watched it several times.

The film………………………………………………………............................................

82. “ Where are you going next weekend ?” Ann said to Hanh

Ann asked………………………………………………………........................................ .…

83. We should keep the environment clean.

The environment……………………………………………………….................................

84. Did they return those books to the library ?

Were………………………………………………………...............................................?

85. I haven’t seen her since she left for Hanoi.

I last saw………………………………………………………..........................................

85. How long have you learned English ?

How long ago………………………………………………………...................................?

86. We spent one hour painting the school gate.

It took ………………………………………………………............................................

87. I go to Phu Bai airport about two hours by bus.

It takes………………………………………………………............................................

88. They did their homework from 2pm to 4pm.

It ………………………………………………………...................................................

89. What did she drink at the party last night ?

What was………………………………………………………........................................?

90. She visited us when she came to the town.

She paid……………………………………………………….........................................

91. There is a river and a big lake in my village.

My village……………………………………………………….......................................

91. Learning English is not easy.

It……………………………………………………….....................................................

92. She can’t pass the examination.

She wished………………………………………………………....................................

93. My close friend, Lan is talkative.

I wish……………………………………………………….............................................

93. I don’t have enough money to buy a computer.

I wish………………………………………………………................................................

94. Mrs. Mai Won’t teach us next year.

We wish……………………………………………………….............................................

95. I can’t join in the trip to Hanoi with my friends.

I wish………………………………………………………................................................

96. I don’t want to dance this evening.

I don’t feel like………………………………………………………....................................

97. Tom said that “ Let’s go out for a walk”.

Tom suggested………………………………………………………....................................

98. It’s not a good idea to travel during rush hour.

It’s better to avoid………………………………………………………................................

99. The explanation was so difficult that I couldn’t understand it.

The explanation was too……………………………………………………….......................

100. I felt very tired so I went to bed early.

I went………………………………………………………...................................................

cho đoan thẳng ab= 15cm, m là điểm nằm giữa hai điểm a và b sao cho am: 2=mb:3.tính độ dài các đoạn thẳng am và mb

CÁC BẠN TRẢ LỜI CÂU HỎI NÀY GIÚP MK NHA

1. Are there any subject should be removed from the curriculum?

2. Are qualifications necessary for us to apply our dream job?

3. How do you think about the education system in Vietnam?